Sorry I don't use OV3 much any more except to transfer the images from camera to computer. Any real editing is (generally) done in Lightroom.
The exception being anything to enter on MyOlympus which seems to only like OV3 edited images.
I've never got on with the Panorama Stitching or the Panorama mode in general. Lightroom does a much better job at hiding the seams and aligning the images for me at any rate.